Gen. Ahmed Abdi Ali Qarjab, widely known as Gen. Qalyare, was killed Tuesday when a landmine exploded in the Bari region of Puntland during ongoing operations against Islamic State militants, security sources said. The blast struck in the Dhasaan area, also wounding and killing some of the troops traveling with the commander, according to officials familiar with the operation. Gen. Qalyare had been a prominent figure in Puntland’s fight against ISIS, a campaign centered in the rugged Calmiskaat Mountains that has stretched on for nearly a year. He was previously injured in clashes in Calmiskaat but had returned to the front lines after receiving medical care abroad. The death of Gen. Qalyare comes amid mounting losses among Puntland’s senior officers leading the offensive, underscoring the high costs of the protracted battle against ISIS in northeastern Somalia.